Calvin jackson



C, JACKSON.

(No Model) GEAR.

Patented Jan; 25,1898.

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UNITED STATES- PATENT CALVIN JACKSON, OF READING, PENNSYLVANIA, ASSIGNORTO KELLEY BROS. d5 SPIELMAN, OF PHILADELPHIA, PENNSYLVANIA.

GEAR.

SPECIFICATION forming part of Letters Patent No. 597,907, dated January25, 1898.

Application filed October 5,1896. Serial No. 607,838. (No model.)

To all whom it may concern:

Be it known that I, CALVIN JACKSON, a citizen of the United States,residing at Reading,

in the county of Berks and State of Pennsylvania, have invented certainnew and useful Improvements in Gears; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

This invention relates to improvements in gears; and it consists of awheel with a grooved face in which is arranged an endless coil of wire,the coils of two wheels meshing and forming an easy and positive gear,the object of the invention being to produce noiseless gears that willmesh at any desired angle and of simple construction.

The invention is fully described in the following specification andclearly shown in the accompanying drawings, in which- Figure 1 is avertical elevation, partly in section, of my improved gear-wheel. Fig. 2is a vertical cross-section of the same on line a: a; of Fig. 1. Fig. 3is a vertical edge view of Fig. 1, showing a portion only of the coil.Figs. 4 and 5 show different methods of securing the coil to a blankwheel. Fig. 6 is a diagram showing the wheels meshing at differentangles.

The body of the wheel A can be made of wood or metal, as desired, andcan be either solid or formed with spokes, as the construction thereofis not essential.

The face of the wheel is provided with a circumferential groove cu Inthis groove is arranged an endless coil, of wire B, which coil is sprunginto the groove and seouredto the wheel in any suitable inanner-as, forinstance, by brazing it at the points where each convolution of the coilcomes in contact with the peripheryof the wheel-or it can be-fastened bymeans of a wire a, running through the coil and passing through the rimof the wheel and secured by means of a nut d, as

shown in Fig. 4:.

In Fig. 4 I have shown another method of securing the coil to the wheelin which the wire 0 instead of being secured by means of a nut is woundaround a pin a and drawn up tightly.

In Fig. 5 I have shown still another method of securing the coil to thewheel. A wire m is secured to the outside of the convolutions along theinner circumference of the coil by means of a thin wire a being woundthrough each convolution and around said wire m. This will securely holdthe coil to the said wire and'the ends thereof can be fastened to thewheel in the manner shown in Fig 4.

One wheel of a set of gears is provided with a right and the other witha left hand coil in order that they will mesh when brought together. Itwill be seen that when they are brought together the convolutions of thecoil on one wheel will enter the spaces between the convolutions of thecoil on the other wheel, and that a number of them will mesh at the sametime, thus distributing the strain and securing a great amount of power.The diameter of the coil can be somewhat larger than the thickness ofthe wheel, allowing the coil to extend on either side thereof, and whenthis is the case two wheels will gear at any angle. The angle of twogear-wheels can be changed or the wheels thrown into or out of gearwhile in operation, as there is sufficient elasticity in the coils toovercome any strain due to such action.

A lubricantis not necessary on my improved gear, as there is very littlefriction on account of the pitch of the convolutions and it ispractically noiseless.

Having thus fully described my invention, what I claim is.-

A blank wheel having its rim provided with a peripheral groove, anendless coil of wire located in said groove, a securing-wire having loopportions projected through said rim, the ends of said securing-wirebeing also projected through said rim, pins designed to engage said loopportions and a collar designed to unite the ends of said wire,substantially as set forth. 7

In testimony whereof I affix my signature in presence of two witnesses.

CALVIN JACKSON.

Witnesses:

- En. A. KELLY,

ADAM L. O'rTnnBnIN.

